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Annual Report to the Minister

The ERA provides an annual report to the Minister for Energy on the effectiveness of the Wholesale Electricity Market (WEM). The report includes an assessment of any specific events, behaviours or matters that have impacted on the effectiveness of the WEM and also any recommended measures to increase the effectiveness of the WEM in meeting the Wholesale Market Objectives.

The WEM allows for competition between generators and retailers, which is expected to deliver electricity at prices less than would otherwise be possible. The market mechanisms are aimed at ensuring the most efficient and least cost generators are used to supply electricity, thus keeping prices as low as practicable. Customers benefit from having a mechanism that ensures they can use electricity when they need it and the electricity is delivered at the minimum practicable cost.

The ERA’s review of the effectiveness of the WEM is important as it identifies whether there are problems with the market design and if improvements are required to make the market more effective in meeting market objectives.

2016 WEM Report

The ERA is currently undertaking its review of the WEM for the 2016 calendar year. On 25 July 2017 we released a discussion paper seeking comment from interested parties on issues that will assist us to undertake the 2016 review. 

Interested parties are invited to make submissions on the Discussion Paper by 4.00 pm (WST) on Wednesday 1 September 2017. Submissions should be made via the portal on the ERA website.


Date Documents File type
25-Jul-17 2016 WEM report discussion paper Adobe PDF 1.3 MB

Previous reviews

Access previous reviews and submissions below.